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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Cerrados; Embrapa Gado de Leite; Embrapa Semiárido. |
Data corrente: |
22/04/1992 |
Data da última atualização: |
29/09/1999 |
Autoria: |
FREIRE, L. C. L. |
Título: |
The nutritive value of tropical pastures for grazing cattle. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
Queensland, Australia: James Cook University of North Queensland, 1981. |
Páginas: |
170p. |
Idioma: |
Inglês |
Notas: |
Tese Doutorado. |
Conteúdo: |
The present study describes experiments aimed at manipulating and evaluating the nutritive value of tropical pastures for grazing cattle. Before commencing experiments with grazing cattle, an experiment was conducted with sheep to determine whether the digestion of mature tropical grass forage varied appreciably from that expected from temperate grass of similar composition. Results from this experiment indicated that despite the low intake and digestibility of mature tropical grass, the digestible fraction of this forage behaved in ways predicted from published data obtained with temperate species. It was concluded that principles of rumen function and ruminant nutrition established with temperate forage species could validly be applied to tropical forage species. The subsequent experiment was aimed at avaluating the effects of superphosphate fertiliser on the botanical and chemical composition and nutritive value of the diet selected by cattle grazing Stylosanthes-native grass pastures. The data obtained in this experiment showed that superphosphate fertiliser improved the nutritive value of the diet selected. Animals grazing fertilised pastures had a significantly higher organic matter intake than those grazing unfertilised pastures during the wet and dry seasons but not during the wet-dry transition. This lower consumption with unfertilised pastures during the wet and dry seasons was associated with lower digestibility of the diet selected and possibly also with lower phosphorus content during the wet season. There was no evidence that higher organic matter intake observed for fertilised pastures was associated with a greater production of legume nor with the ingestion of a greater proportion of legume in total diet. It appears that the amount of legume in the diet was mainly determined by the time of the year and by the proportion of legume available in the pasture. Three experiments were conducted to evaluate the use of monensin sodium for manipulating rumen fermentation on the nutritive value of native pasture. The first experiment studied the effect of monensin on liveweight change of steers grazing a native pasture and the second examined this effect on the nutritive value of the forage selected during the wet and dry seasons, while the third used penned animals to study the effect of monensin on the nutritive value and utilisation of native pasture hay with and without nitrogen supplements. Results from these experiments indicated that monensin was efficient in changing the rumen fermentation patterns by increasing the production of propionic acid and reducing acetic and butyric acids. However, no beneficial effects on intake and liveweight gain of grazing animals was observed by the use of monensin during the wet or dry season. Although supplementation of the low quality hay with urea plus formaldehyde-treated casein produced an increase in the digestible organic matter intake (largely by improving both intake and digestibility), no benefit for the animal was achieved by the use of monensin. Comparisons made between predicted and observed liveweight gain of cattle grazing tropical pastures suggest that liveweight gain could accurately predicted from digestible organic matter intake by the use of tables presented by the Commonwealth Agricultural Bureaux - CAB (1980). However, estimates of feed consumption from formulae presented by the CAB underestimated the observed intakes by 25% during the wet season. There is, therefore, an urgent need for the development of equations that would allow the estimation of the digestible organic matter intake. A relationship between organic matter digestibility and digestible organic matter intake is proposed and its limitations are discussed. Although it is clear that much research is needed to elucidate problems of nutrition of cattle grazing tropical pastures, the results from this investigation suggest that the CAB system does provide a useful framework to base the development of system for livestock feeding for tropical as well as for temperate Australia. MenosThe present study describes experiments aimed at manipulating and evaluating the nutritive value of tropical pastures for grazing cattle. Before commencing experiments with grazing cattle, an experiment was conducted with sheep to determine whether the digestion of mature tropical grass forage varied appreciably from that expected from temperate grass of similar composition. Results from this experiment indicated that despite the low intake and digestibility of mature tropical grass, the digestible fraction of this forage behaved in ways predicted from published data obtained with temperate species. It was concluded that principles of rumen function and ruminant nutrition established with temperate forage species could validly be applied to tropical forage species. The subsequent experiment was aimed at avaluating the effects of superphosphate fertiliser on the botanical and chemical composition and nutritive value of the diet selected by cattle grazing Stylosanthes-native grass pastures. The data obtained in this experiment showed that superphosphate fertiliser improved the nutritive value of the diet selected. Animals grazing fertilised pastures had a significantly higher organic matter intake than those grazing unfertilised pastures during the wet and dry seasons but not during the wet-dry transition. This lower consumption with unfertilised pastures during the wet and dry seasons was associated with lower digestibility of the diet selected and possibly also with lower ph... Mostrar Tudo |
Palavras-Chave: |
Bovinae; Bovine; Feed crops; Feed grasses; Nutritive Valve; Pastagem Tropical; Pasture; Production data; Regiao Tropical; Tropical forage; Tropical Range; Tropical zones. |
Thesagro: |
Bovino; Gramínea; Gramínea Forrageira; Nutrição Animal; Pastagem; Pastejo; Planta Forrageira; Produção; Rúmen; Superfosfato; Valor Nutritivo. |
Thesaurus Nal: |
animal nutrition; cattle; digestibility; grasses; nutritive value; pastures; Stylosanthes; superphosphate. |
Categoria do assunto: |
-- |
Marc: |
LEADER 05361nam a2200505 a 4500 001 1563763 005 1999-09-29 008 1981 bl uuuu m 00u1 u #d 100 1 $aFREIRE, L. C. L. 245 $aThe nutritive value of tropical pastures for grazing cattle. 260 $aQueensland, Australia: James Cook University of North Queensland$c1981 300 $a170p. 500 $aTese Doutorado. 520 $aThe present study describes experiments aimed at manipulating and evaluating the nutritive value of tropical pastures for grazing cattle. Before commencing experiments with grazing cattle, an experiment was conducted with sheep to determine whether the digestion of mature tropical grass forage varied appreciably from that expected from temperate grass of similar composition. Results from this experiment indicated that despite the low intake and digestibility of mature tropical grass, the digestible fraction of this forage behaved in ways predicted from published data obtained with temperate species. It was concluded that principles of rumen function and ruminant nutrition established with temperate forage species could validly be applied to tropical forage species. The subsequent experiment was aimed at avaluating the effects of superphosphate fertiliser on the botanical and chemical composition and nutritive value of the diet selected by cattle grazing Stylosanthes-native grass pastures. The data obtained in this experiment showed that superphosphate fertiliser improved the nutritive value of the diet selected. Animals grazing fertilised pastures had a significantly higher organic matter intake than those grazing unfertilised pastures during the wet and dry seasons but not during the wet-dry transition. This lower consumption with unfertilised pastures during the wet and dry seasons was associated with lower digestibility of the diet selected and possibly also with lower phosphorus content during the wet season. There was no evidence that higher organic matter intake observed for fertilised pastures was associated with a greater production of legume nor with the ingestion of a greater proportion of legume in total diet. It appears that the amount of legume in the diet was mainly determined by the time of the year and by the proportion of legume available in the pasture. Three experiments were conducted to evaluate the use of monensin sodium for manipulating rumen fermentation on the nutritive value of native pasture. The first experiment studied the effect of monensin on liveweight change of steers grazing a native pasture and the second examined this effect on the nutritive value of the forage selected during the wet and dry seasons, while the third used penned animals to study the effect of monensin on the nutritive value and utilisation of native pasture hay with and without nitrogen supplements. Results from these experiments indicated that monensin was efficient in changing the rumen fermentation patterns by increasing the production of propionic acid and reducing acetic and butyric acids. However, no beneficial effects on intake and liveweight gain of grazing animals was observed by the use of monensin during the wet or dry season. Although supplementation of the low quality hay with urea plus formaldehyde-treated casein produced an increase in the digestible organic matter intake (largely by improving both intake and digestibility), no benefit for the animal was achieved by the use of monensin. Comparisons made between predicted and observed liveweight gain of cattle grazing tropical pastures suggest that liveweight gain could accurately predicted from digestible organic matter intake by the use of tables presented by the Commonwealth Agricultural Bureaux - CAB (1980). However, estimates of feed consumption from formulae presented by the CAB underestimated the observed intakes by 25% during the wet season. There is, therefore, an urgent need for the development of equations that would allow the estimation of the digestible organic matter intake. A relationship between organic matter digestibility and digestible organic matter intake is proposed and its limitations are discussed. Although it is clear that much research is needed to elucidate problems of nutrition of cattle grazing tropical pastures, the results from this investigation suggest that the CAB system does provide a useful framework to base the development of system for livestock feeding for tropical as well as for temperate Australia. 650 $aanimal nutrition 650 $acattle 650 $adigestibility 650 $agrasses 650 $anutritive value 650 $apastures 650 $aStylosanthes 650 $asuperphosphate 650 $aBovino 650 $aGramínea 650 $aGramínea Forrageira 650 $aNutrição Animal 650 $aPastagem 650 $aPastejo 650 $aPlanta Forrageira 650 $aProdução 650 $aRúmen 650 $aSuperfosfato 650 $aValor Nutritivo 653 $aBovinae 653 $aBovine 653 $aFeed crops 653 $aFeed grasses 653 $aNutritive Valve 653 $aPastagem Tropical 653 $aPasture 653 $aProduction data 653 $aRegiao Tropical 653 $aTropical forage 653 $aTropical Range 653 $aTropical zones
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registros recuperados : 22 | |
4. | | SCHACHT, W. H.; KAWAS, J. R.; MALECHEK, J. C.; FREIRE, L. C. L. Efeito da suplementação de energia e nitrogênio no ganho de peso de caprinos em pastagem nativa (caatinga) na época seca, no nordeste do Brasil. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 22., 1985, Balneário Camboriu, SC. Anais... Balneário Camboriú: Sociedade Brasileira de Zootecnia, 1985. p. 62.Biblioteca(s): Embrapa Caprinos e Ovinos. |
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5. | | BARROS, N. N.; FREIRE, L. C. L.; LOPES, E. A.; JOHNSON, W. L. Estudo comparativo da digestibilidade de leguminosa forrageira com ovinos e caprinos. I. Digestibilidade in vivo do feno de cunhã. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 26, n. 8, p. 1209-1213, ago., 1991.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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6. | | BARROS, N. N.; FREIRE, L. C. L.; LOPES, E. A.; KAWAS, J.; JOHNSON, W. L. Estudo comparativo da digestibilidade de leguminosa nativa com caprinos e ovinos do sertão cearense. II. Digestibilidade in vivo do feno de mata-pasto. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 26, n. 8, p. 1215-1218, 1991.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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7. | | KAWAS, J. R.; GUIMARAES, W.; BARROS, N. N.; FREIRE, L. C. L.; FOOTE, W. C. Survival and growth of goat kids grazing native range from dams supplemented with incremental energy levels. In: INTERNATIONAL CONFERENCE ON GOATS, 4., 1987, Brasília, DF. Proceedings... Brasília, DF: EMBRAPA-DDT, 1987. p. 1399. Abstract 139.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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8. | | BARROS, N. N.; FREIRE, L. C. L.; LOPES, E. A.; JOHNSON, W. L. Valor nutritivo do feno de juazeiro (Zizyphus joazeiro) para caprinos e ovinos. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 26, n. 8, p. 1299-1304, ago. 1991.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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9. | | FREIRE, L. C. L; BARROS, N. N.; CARNEIRO, H.; LOPES, E. A.; JOHNSON, W. L. Valor nutritivo de algumas forrageiras para caprinos e ovinos no Nordeste. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 22., 1985, Balneario Camboriú, SC. Anais.... Balneario Camboriú: Sociedade Brasileira de Zootecnia, 1985. p. 337. Resumo 238.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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10. | | BARROS, N. N.; KAWAS, J. R.; FREIRE, L. C. L.; JOHNSON, W. L.; SANTOS, J. W. dos. Nutritive value of total mixed rations with various energy sources fed to lambs, in Northeast Brazil. Journal of Animal Science, v. 61, suppl.1, p. 452, 1985. Abstract 592. Abstracts of the 77 ASAS Annual Meeting, Biloxi, Mississipi, 1985.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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12. | | SILVA, A. de S.; HERMES, L. C.; FREIRE, L. C. L.; LOPES, P. R. C.; PESSOA, M. C. P. Y. Qualidade ambiental e produção integrada de frutas (PIF) no sub-médio do Rio São Francisco. In: SEMINARIO BRASILEIRO DE PRODUCAO INTEGRADA DE FRUTAS, 2., 2000, Bento Goncalves, RS. Anais. Bento Goncalves: Embrapa Uva e Vinho, 2000. 100p. (Embrapa Uva e Vinho. Documentos, 28). Editado por: Gilmar Ribeiro Nachtigall; Ana Beatriz Costa Czermainski. p. 1-8.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Meio Ambiente. |
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13. | | KAWAS, J. R.; CARNEIRO, H.; BARROS, N. N.; FREIRE, L. C. L.; KAWAS, F. N.; SHELTON, M.; JOHNSON, W. L. Valor nutritivo para caprinos das silagens de sorgo forrageiro (Sorghum vulgare) e de cunhã (Clitoria ternatea) em dois estágios de maturidade. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 22., 1985, Balneário Camboriú, SC. Anais... Balneário Camboriú: Sociedade Brasileira de Zootecnia, 1985. p. 355.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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14. | | KAWAS, J. R.; CARNEIRO, H.; BEZERRA, M.; ARRUDA, F. de A. V.; FREIRE, L. C. L.; JOHNSON, W. C.; SHELTON, J. M. Influence of fiber component of Clitoria ternatea and sorghum silages on intake and digestion by goats in Northeast Brazil. Journal of Animal Science, v. 61, supl. 1, p. 475-476, 1985. Abstract 648. Abstracts of the 77 ASAS Annual Meeting, Biloxi, Mississipi, 1985.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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15. | | LOPES, P. R. C.; MOREIRA, A. N.; HAJI, F. N. P.; LOPES, L. M. da M.; LEITE, E. M.; FREIRE, L. C. L. Produção integrada de manga. Informe Agropecuário, Belo Horizonte, v. 22, n. 213, p. 67-71, nov./dez. 2001.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Embrapa Semiárido. |
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16. | | HAJI, F. N. P.; MOREIRA, A. N.; LOPES, P. R. C.; FERREIRA, R. C. F.; LOPES, L. M. da M.; FREIRE, L. C. L. Produção integrada de uvas finas de mesa. Informe Agropecuário, Belo Horizonte, v. 22, n. 213, p. 57-60, nov./dez. 2001.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Embrapa Semiárido. |
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17. | | HAJI, F. N. P.; FREIRE, L. C. L.; ROA, F. G.; SILVA, C. N. da S.; SOUZA JUNIOR, M. M.; SILVA, M. I. V. da. Manejo integrado de Scrobipalpuloides absoluta (Povolny) (Lepidoptera: Gelechidae) no Submedio Sao Francisco. Anais da Sociedade Entomológica do Brasil, v. 24, n. 3, p. 587-591, dez. 1995.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Embrapa Semiárido. |
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18. | | BARROS, N. N.; KAWAS, J. R.; FREIRE, L. C. L.; ARAUJO FILHO, J. A. de; SHELTON, J. M.; JOHNSON, W. L. Digestibility and intake of various native and introduced forages by goats and hair sheep in Northeast Brazil. In: REUNIÃO TÉCNICO-CIENTÍFICA DO PROGRAMA DE APOIO A PESQUISA COLABORATIVA DE PEQUENOS RUMINANTES, 1., 1986. Sobral. Anais... Sobral: EMBRAPA-CNPC: SR-CRSP, 1986. p. 219-233. (EMBRAPA-CNPC. Documentos, 6).Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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19. | | CARNEIRO, H.; KAWAS, J. R.; BARROS, N. N.; ARAUJO FILHO, J. A. de; SANTOS, J. W. dos; SHELTON, M.; JOHNSON, W. L.; FREIRE, L. C. L. Efeito da ensilagem na composição química do sorgo forrageiro (Sorghum vulgare) e da cunhã (Clitoria ternatea). In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 22., 1985, Balneário Camboriú, SC. Anais... Balneário Camboriú: Sociedade Brasileira de Zootecnia, 1985. p. 249.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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20. | | SILVA, A. de S.; LOPES, P. R. C.; PESSOA, M. C. P. Y.; SILVA, C. M. M. S.; FERRACINI, V. L.; HERMES, L. C.; SA, L. A. N. de; HAMMES, V. S.; FRIGHETTO, R. T. S.; CHAIM, A.; HAJI, F. N. P.; RAMOS, M. F.; MIRANDA, J. I.; FREIRE, L. C. L. Novas estrategias de pesquisa e desenvolvimento na producao integrada de frutas (PIF): 1. projeto de pesquisa em produção integrada de manga. In: SEMINARIO BRASILEIRO DE PRODUCAO INTEGRADA DE FRUTAS, 2., 2000, Bento Goncalves. Anais... Bento Goncalves: Embrapa Uva e Vinho, 2000. p. 36-50. Editado por Gilmar Ribeiro Nachtigall, Ana Beatriz Costa Czermainski.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Semiárido. |
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Registros recuperados : 22 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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